{
    "CN": "etcd-pf",
    "key": {"algo": "rsa", "size": 2048},
    "hosts": ["127.0.0.1"{{range $ip := .Roles.etcd}},"{{$ip}}"{{end}}{{range $ip := .Roles.etcd}},"{{ (index $.hostSet $ip).Hostname }}"{{end}}],
    "names": [{"C": "CN", "L": "beijing", "O": "etcd", "ST": "beijing", "OU": "System"}]
}